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GaussianSquare

class GaussianSquare(duration, amp, sigma, width, name=None)

GitHub

A square pulse with a Gaussian shaped risefall on either side:

risefall=(durationwidth)/20<=x<risefallf(x)=ampexp((1/2)(xrisefall/2)2/sigma2))risefall<=x<risefall+widthf(x)=amprisefall+width<=x<durationf(x)=ampexp((1/2)(x(risefall+width)/2)2/sigma2))risefall = (duration - width) / 2\\0 <= x < risefall\\f(x) = amp * exp( -(1/2) * (x - risefall/2)^2 / sigma^2) )\\risefall <= x < risefall + width\\f(x) = amp\\risefall + width <= x < duration\\f(x) = amp * exp( -(1/2) * (x - (risefall + width)/2)^2 / sigma^2) )

Initialize the gaussian square pulse.

Parameters

  • duration (int) – Pulse length in terms of the the sampling period dt.
  • amp (complex) – The amplitude of the Gaussian and of the square pulse.
  • sigma (float) – A measure of how wide or narrow the Gaussian risefall is; see the class docstring for more details.
  • width (float) – The duration of the embedded square pulse.
  • name (Optional[str]) – Display name for this pulse envelope.

Attributes

amp

Type: complex

The Gaussian amplitude.

Return type

complex

id

Type: int

Unique identifier for this pulse.

Return type

int

parameters

Type: Dict[str, Any]

Return a dictionary containing the pulse’s parameters.

Return type

Dict[str, Any]

sigma

Type: float

The Gaussian standard deviation of the pulse width.

Return type

float

width

Type: float

The width of the square portion of the pulse.

Return type

float


Methods

__call__

GaussianSquare.__call__(channel)

Call self as a function.

draw

GaussianSquare.draw(dt=1, style=None, filename=None, interp_method=None, scale=1, interactive=False, scaling=None)

Plot the pulse.

Parameters

  • dt (float) – Time interval of samples.
  • style (Optional[PulseStyle]) – A style sheet to configure plot appearance
  • filename (Optional[str]) – Name required to save pulse image
  • interp_method (Optional[Callable]) – A function for interpolation
  • scale (float) – Relative visual scaling of waveform amplitudes
  • interactive (bool) – When set true show the circuit in a new window (this depends on the matplotlib backend being used supporting this)
  • scaling (Optional[float]) – Deprecated, see scale

Returns

A matplotlib figure object of the pulse envelope

Return type

matplotlib.figure

get_sample_pulse

GaussianSquare.get_sample_pulse()

Return a SamplePulse with samples filled according to the formula that the pulse represents and the parameter values it contains.

Return type

SamplePulse

validate_parameters

GaussianSquare.validate_parameters()

Validate parameters.

Raises

PulseError – If the parameters passed are not valid.

Return type

None

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